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https://issues.apache.org/jira/browse/TEZ-2644?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gopal V updated TEZ-2644:
-------------------------
Labels: Performance (was: )
> UnorderedKVOutputWriter has unnecessary synchronized blocks
> ------------------------------------------------------------
>
> Key: TEZ-2644
> URL: https://issues.apache.org/jira/browse/TEZ-2644
> Project: Apache Tez
> Issue Type: Bug
> Affects Versions: 0.8.0, 0.7.1
> Reporter: Gopal V
> Labels: Performance
> Attachments: dataoutputstream-sync.png, flink-1-1-edge.png
>
>
> Nearly 50% of the CPU samples for Unordered 1-1 edges are either in
> ByteArrayOutputStream or DataOutputStream synchronization primitives.
> !flink-1-1-edge.png!
> !dataoutputstream-sync.png!
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